Valve equipment for oil-well pumps



July 17, 1-928.

C.. B. LEWIS El' AL.

VALVE EQUIPMENT FOR OIL WELL PUMPS Filed June 8, 1927 Patented July 1,7,1928.

u Nireo :s #IA-Tes PAIE-NI Ilo.lsFrI-cz"e..

Y CHARLES Is. LnwIs AND `EDGAR nnoBnnTso'N, .on Los ANGnLns,CALIFORNIA.l

VALVE nQUIPIlIEN'n` non OIL-'WELL' PUMPS.

Application filed June 8,

' i Our invention relates to deep well pumps of the plunger typeintended for oil wells and more particularly to 'valves for such pumps.p p

rl-"he 'common practice in oil pumps has been to fix the working valveon thenl )erV I C end of the plunger andV to lprovide theifstand- 'ingvalve witha rod,l nown as a Garbutt rod, extending upwardlytherelrcinthrough anut inthe lower `end ot' the' plunger, the nut beingadapted tov engage 'the upper end of the Garbutt rod when the plunger ispulled out of the pump so as to lift the standing valve out alongwirth`the plunger. The'etliciency of the-pump, with `this arrangement ofvalves, o'liten becomes'greatly reduced'by an accumulation'ot gas,between the 'standing valve and ythe working" valve, which by reason ofits' great elasticity causes a considerable amountof vlost motion. Ithas been found'advantageous, therefore, to fix the workingl valve onjthe lower. end of the plunger, its proximity in that position, to'thestanding'valve being such as to prevent theaccumulation'of anyappreciable axnount of' gasbetween'the two valves. p

Thevprimary object of our invention is to provide an improved valveequipment for deep well pumps whereby exceptionally high elliciency andexceptionally smooth action in the loperation'thereoip is attained.

A further object is to providea `standing valve which vis adapted foruse' wi th a plungerhaving 'the working valve lined on'its lower end andmeans associated with the working valve for'withdrawing the standingvalve from'the pump along with the plunger.

A further object is to'provide a vdeep well "pump having its Werl-:ing'valve fixed onthe lower end of' the'plu'nger thereof andneansassociated with the working valve vlor rwithdrawing the standing ,valvefrom Vthe-pump along with the plungenrsaid means being` -a substitutefor the usua'lGrarbutt rod.

-Otherobjectsand advantages will appear' hereinafter and while we showherewith and will describe a preferred form of construction, we desireit to be'under'stood that we do not conlineV ourselves to suchYpreferred form but that various changes and adaptations may be'madetherein without departing from the spiritV of our invention as here`inafter claimed.

Referring to the drawings whichaccomyupper end,1isfscrewed into thelower end, 'fthe plunger1 to'servevas aworking valve. A `cage' 2O isscrewed-onto 'the-"flower endojljl 1927./` seriarm. 197,308.

'proved VVvalves, vft-he working valve beingr Vshown 'in' section and'the standing valve -in elevation.

will be seen` tor show apump ahaving ythe usual plunger :10 adapted toreciprocate'in the" usual workingbarrel A11 connectedvinithe 'usualpump'itubing 12, the'plungerubeing 'connected-'to' the usualpolished rod13 by` a sand head 14, with streamline oilfou'tlets,

`-Fig.'2 isr an enlarged sectional view of the f standlngval-ve showninf Fig. 1, the'l section which" is screwed intovthe upperendof thelplung'er againsta j amnut 15.

A ball valve of theclosedtype comprising `a blind cage 1Gv with: across-bar `17 tolimit the upward movement oftlieball'lS and -a cagecouplingf 19, with a ball seat, in :its

'cage coupling 19 and an 'auxiliary ipolished rod 21 smallerthan-the'regular' polished rod lis screwed into cage 20 so as'to extenddownwardly therefrom. I

rThe standing valve"22 Ya'inodied form oit the valve shown in ourapplication, filed sept.. 13,1926, una@ senaizNO; v134,987, .for Y apatent ion a freli'eit Vvalve forl deep well pumps. v. It consistsot a'tubularjbody 23, radaptedto seat inthe pumptfubef couplingr 24. -belowthe plunger "of f the pump, said boldyhaving 'a sleeve25 in the upperend v'thereof which isn-heldinconcentricrelation. y y

loo

v thereto by regularly`VY spacedv radial arms .for partitions 26fso asto provide vertical openings 27' between the body 23 and sleeve25,

through which oil may flow freely. Sleeve 25 is internallyscrew-threaded and two sleeves 28, and 29, having a diameter whichconforms to 'that of polished rod 21, are Y screwed one into the upperandthe other into the lower end thereof, as shown in Fig.

2. The upper ends of partitions 2G are cut away somewhat so that anannular` groove 8O is formed at the upper end of the vvalve body,between sleeve 25 and the body proper, and a ring `lapper 8l havingbeveled faces 32, adapted to seat in groove 30, encircles guide sleeve28 and serves as the valve closure. A stop nut and a lock nut 34k arescrewed on sleeve 28 above tlapper 31. to adjustably liinit its workingspace. Radial grooves 35 are cut in the upper end of ring flapper 3l toprovide ior` equalization of pressure on the inner and outer sidesthereof. The upper and lower ends of valve body 23 are extended to forniscrew-threaded iiipples 36 and 37, respectively, and an upper cage 38and a lower cage 39 are srrewed thereon, the upper one extendingupwardly tothe end of guide sleeve 28 and the lower one extendingdownwardly to the end of guilde sleeve 29A and each.v embracing saidsleeve ends respectively.

Vrl`he standing valve thus constructed is adapted to rest in its seat incoupling 24- with polishedv rod 2l extending downwardly through guidesleeves Q8 and 29 thereof. The length of polished rod 2l is such that akwasher Ll() and retaining` nuts L.'i-l, screwed on its projecting lowerend, reciprocate iii the punip tubing below lower cage 39 while theplunger is operating` and coiiie iii contact with cage 39 only when theplunger is being withdrawii troni the pun'ip or is being inserted intoit.

rlhe operation of the valves has been suggested in the descriptionthereof. Polished rodf 2l works in sleeves 28 and 29 et the standing'valve. As the plunger nieves upwardly oil drawn through the standingvalve into the space between it and the workingl valve, llappei 8llifting olla. ifi-oni its scat to allow it to pass. lVhen the plungerstarts .on its downward stroke tlapper 3i drops bacl and closes thestanding valve whereupon oil .flows through the working valve, ball i8lifting oil' 'troni its scat-and allowing free passage thereto andtalliiig'baclr on i ts seat when the plunger starts on another upwardStroh iliuxiliary polished rod 2l serves to effect an exceptionallysteady action ot the plun i' when operating and also serves a.J a sub?Jitule for the usual (flarbutt rod to withdraw the standing` valve tronithe puinp along with the pluiigi-Pr.` The two cages 38 and 39 on thestanding` valve serve the double purpose ot holding guide sleeves 2S and29 in rigid aligninentand also as a protection 'troni possible injury tothe working .parts ot the standing valve when being reinoved :troni orinserted into the puinp.

It will be seen, therefore, that a puinp equipped, as shown, with our`improved valves and auxiliary polished rod will operate withexceptionalsmoothness and elficiency and can be changed or repaired withthe usual facility. i Y

lfiaving thus illustrati-id' and describedY our invention, we claiiiicomprising a ,tubular body adapted tov seat in a puii'ip-tube coupling,aconcentri-c sleeve held in said tubular body by radial partitions so asto forni `a series oi vertical openi. A standing valve ior deep wellpuinps y ings ieriiiinating in an annulai` passage in the upper endthereoil; guide sleeves ixcd in said concentric sleeve so as to extendaboveand below said tubular body, said guide sleeves being adapted toreceive a pol-l Y islied rod extending troni a punip plunger through thevalve; a ring if'apper encircling the upper oiisaid guide sleeves andserving as a closure 'to said annular passage; a stop nut adjuslablj.'fixed on said upper guide sleeve to liinit the viiiovenient oit saidflapper and cages lixed on the upper and lower ends ot' said tubularbody so as to embrace the vends of' said guide sleeves.

ln conibination with an oil well punip handing valve comprising atubular body seated in the )uni J-tube counlino. Ysaid. bod i having aseries ot vertical ducts whose up-V per endsteriniiiate in a coiiiinonannular groove,A concentric with the axial bore ot the tubular body;guide sleeves fixed in the central bore ot said tubular body, so as toextend beyond its upper ai'idlower ends; .a ring iiapper encircling theupper guide slee vdsaidilapper being` adapted to seat in y said annulargroove and to serve as a closure to said vertical ducts; an adjustablestop-nut, on the upper guide sleeve, adapted Ato-liniit the niovenientof said dapper; pro-k EDGAR n. nosniirsoii.

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